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Finding the Fourth Proportional to 19,980.71, 29,963.27 and 7,493.93

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Solution

The fourth proportional to 19,980.71, 29,963.27 and 7,493.93 is: 11,237.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.71 : 29,963.27 = 7,493.93 : x
  2. Step 2: Convert to fraction form
    19,980.71/29,963.27 = 7,493.93/x
  3. Step 3: Cross multiply
    19,980.71x = 29,963.27 × 7,493.93
  4. Step 4: Simplify right side
    19,980.71x = 224,542,460.67
  5. Step 5: Solve for x
    x = 224,542,460.67/19,980.71
  6. Step 6: Final answer
    x = 11,237.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.